Valve-control mechanism



. 7 1,639, .5 A 1927' E. A. FIELD T AL 1 93 VALVE CONTROL MECHANISM Filed Nov. 23, 1925 3 Sheets-Sheet 1 z ll llk I I n INVENTORJ Edward G. Fae/d Edward G Fz'e/a Jr Y ZVQ M Aug. 23, 1927,

E. A. FlE LD ET AL VALVE CQNTROIJ MECHANISM Filed Nov. 23, 1925 s Sheets-Sheet 2 INVENTIORJ" Edward G. field A RNEYS I Eda/4rd Aug 23,1927. 1,639,935

E. A. FIELD ET AL VALVE CONTROL MECHANISM Filed Nov. 23, 1325 3 Sheqts-Sh egt 3 13 l I B] 15 1 F -T 34 11v VENTORG Edward 4. Field BY Eda/am 4 Field Jr Patented Aug. 23, 1927.

UNITE STATES PATENT OFFICE.

EDWARD A. FIELD AND EDWARD A. FIELD, JR., OF CHICAGO, ILLINOIS, ASSIGNORS TO FIELD ENGINEERING COMPANY, OF CHICAGO, ILLINOIS.

VALVE-CONTROL MECHANISM.

Application filed November 23, 1925. Serial No. 70,960.

Our improved valve control mechanism is especially designed by us for use in connection with fuel burners of the type shown in our application for Letters Patent filed April 20, 1925, Serial No. 24,422, although adapted for use in various relations where it is desired to automatically close a valve in the event of a surplus of liquid having been delivered and not consumed as in normal operation.

The main object of this invention is to provide an improved valve control mechanism which is very efficient and positive in its operation.

A further object is to provide an improved valve control mechanism which is not likely to get out of order and is very durable in use and also one which may be quickly reset by an unskilled person.

Objects pertaining to details and econ: oinies of construction and operation of our invention will definitely appear from the detailed description to follow. The invention is clearly defined and pointed out in the claims.

A structure embodying the features of our invention is illustrated in the accompanying drawing forming a part of this application, in which Fig: I is a side elevation of our improved control mechanism, portions of a furnace and burner and a supply tank "being conventionally shown in operative relation to the control mechanism.

Fig. II is a: detail view mainly in vertical section through the control mechanism on a line corresponding to line 2'2 of Fig. III.

Fig. III is a detail view mainly in section on a line corresponding to broken line 33 of Fig. II.

Fig. IV is a detail view of certain of the operating parts removed from the housing,

for convenience in illustration Fig. V is a detail side view of the parts shown in Fig. IV, the counterweight being shown by full lines in set position and by dotted lines in actuated position.

Fig. VI is an enlarged detail section on a line corresponding to line 66 of Figs. IV and VII.

Fig. VII is an enlarged detail view partially in section on a line corresponding to broken line 77 of Fig. VI.

Fig. VIII is a detail horizontal section on a line corresponding to line 88 of Fig. III.

Fig. IX is a perspective View with the housing cover open and with the parts in reset-ting position.

In the drawing similar numerals of refer ence indicate similar parts in all the views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1 represents the fire pot of a furnace, 2 a liquid fuel burner and 3 the fuel supply tank. These parts are shown in order to illustrate the relation of our valve control mechanism thereto.

Our improved valve control mechanism comprises a housing 4 open at the bottom, a receptacle 5 being pivotally mounted at 6 within the housing and constituting the bottom thereof. This receptacle has a discharge lip or spout 7 at one edge. The housing has an opening 8 therein provided with a cover 9 pivoted at 10, the purpose of this being to afford access to the interior of the housing. The housing has another opening 11 therein in which is seated an. annular member 12 provided with bracket arms 13 projecting into the housing to a central point.

A valve casing 1 is seated upon this mem ber 12 and has an inlet chamber 15 connected to the supply tank by the pipe 16 and a discharge chamber 17 connected to the burner by thepipe 18. These chambers are connected by a port 19 terminating in a valve seat 20.

The chamber 15 is closed at one end by =1 on pivots 2-8 carried by the arms the overflow bucket 29 being suspended from this lever by the links 30. T he links are carried by the pivots 31 on the lever which are disposed so that the pivots 28 for the lever constitute stops for the links. The bucket is suspended within the receptacle 5 as shown in Fig. II.

The lever :27" has an arm 32 with an upwardly projecting stop portion 33. This arm 82 is connected by the link 34 to the valve. stem, the link comprising a section pivoted at 36 to the valve stem a section 37 pivoted at 38 to the lever arm 32 and a threaded section 89 connecting the sections 35 and 37. The pivot 38 is disposed out of alinement with the pivots 28 so that an eccentric action for the link to the actuating lever is provided.

We provide a wei av arm ll mounted on LllQ pivots 2S :tor tua 'ig lever. #Vhen the parts; are sition this weight rests on the stop 03 on the arm 32. The over-flow pipe 4-2 leads from the burner to the spout 43 within the housing arranged to deliver to the bucket so that upon the burner becoming inoperative through extinguishing; the flame or a surplus of fuel accumulating for any reason, it returns to the. bucket and actuates the lever 27 to close the valve. The weight swinging past the pivot center imparts a blow to the lever and insures he seating of the valve.

\Vhen it is desired to reset the parts it is only necessary to tilt the receptacle 5 on its pivot to the position indicated in Fig. 12$, which discharges the bucket, the contents being discharged from the receptacle 5 into a pan or other receptacle placed beneath the same. The firQ'er 44L on the receptacle. engases the we ght at the same time and swings it to set position against the stop To regu t e the normal flow oi fuel. we provide a do member as which is pivoted at 456 to pr set through the yoke member 35 ong-aging the end of the valve adjusting screw 47 is provided ncealed end so that it is adjusted the person setting the lnirner.

To provide tor adjnstmi-znt bv the operator. we provide a second adjusting screw 48 which is threaded into the member 12 and provided with a hand wheel 51 having a stop 52 thereon. The coacting adjustable stop 53 has a sleeve-like portion 49 embracing the screw and seated in the member 12. A set screw 50 secures this stop 53 in its adjusted positions. This stop 53 also constitutes an index member for the hand wheel.

Vith this arrar anent of: parts we provide a mechanism which is very positive in its action. and one which is very easily reset as occasion requires.

We have not attempted to illustrate certain modifications and adaptations which we contemplate as we believe the disclosure made will enable those skilled in the art to embody ada t our improvements as may be desired.

Having thus described our invention what we claim as new and desire t secure. by Letters Patent is:

1. In a. structure of ti e class described. the combination of a housing open at. the bottom, a receptacle pivotally mounted within and constituti' a bottom for the housing. a valve. casing mounted on said housing and provided with inlet and discharge chanr bers, there being a port connecting said chambers, a valve coacting with said port, said valve being provided with a stem having a diaphragi'n secured thereto and const tuting a wall for said discharge chamber an overflow bucket within said housing, spaced bracket arms projecting centrally into said housing. a yokedike lever nivotallfv mounted on said bracl-zet arms and provided with an arm disposed between said bracket arms, a. link connecting said arm on said lever to s id valve stem. the pivot for the link to said arm being eccentric relative to the pivots for said lever. suspending links for said bucket pivotally mounted on said lever. the pivots tor said lever constituting stops when the parts are in set position, a tappet weight having a forked arm pivotally mounted on the pivots said lever to strike said lever when actuated and to engage its said arm when the parts are in se position, and a bucket dumping member on said receptacle engagina the bucket to tiltv the same when the receptacle is tilted. said receptacle being provided with weight returning linger whereby the bucket is discharged and the returned to set position upon the tilting of the receptacle.

2. In structure of the class described, the combination of a housing open at the bottom, a. receptacle pivotally mounted within and constituting a bottom for the housing. a valve casing mounted on said housing and provided with inlet and discharge chambers, there being a port connecting said chambers, a valve coacting with said port, said valve being provided with a stem having a diapl ragm secured thereto and constituting a wall for said discharge chamber, an overflow bucket within said housing. spaced bracket arms projecting centrally into said housing, a yoke-like lever pivotallv mounted on said bracket arms and provided with an arm disposed between said bracket arms, a link connecting said arm on said lever to said. valve stem, the pivot for the link to said arm being eccentric relative to the pivots for said lever. and suspending links for said bucket pivotally mounted on said lever, the pivots for said lever constituting stops with which the suspending lin s enwith which the suspending links engage when the parts are in set position.

3. In a structure of the class described, the combination of a housing open at the bottom, a receptacle pivotally mounted within and constituting a bottom for the housing, a valve casing mounted on said housing and provided with inlet and discharge chambers, there being a port connecting said chambers, a valve coacting with said port, said valve being provided with a stem having a diaphragm secured thereto and constituting a wall for said discharge chamber, an overflow bucket within said housing, a pivotally mounted lever, a link eccentrically connected to said lever and pivotally connected to said valve stem, a suspending link for said bucket pivotally mounted on said lever, a pivotally mounted weight adapted to engage said lever when the parts are actuated and to be supported thereby when the parts are in set po sition, and a bucket dumping member on said receptacle engaging the bucket to tilt the same when the receptacle is tilted, said receptacle being provided with a weight engaging finger whereby the bucket is discharged and the parts are returned to set position upon the tilting of the receptacle.

4. In a structure of the class described, the combination of a housing open at the bottom, a receptacle pivotally mounted within and constituting a bottom for the housing, a valve casing mounted on said housing and provided with inlet and discharge chambers, there being a port connecting said chambers, a valve coacting with said port, said valve being provided with a stem having a diaphragm secured thereto and constituting a wall for said discharge chamber, an overflow bucket within said housing, a pivotally mounted lever on which said bucket is mounted operatively connected to said valve stem, a pivotally mounted weight adapted to strike said lever when the parts are actuated, and a bucket dumping member on said receptacle engaging the bucket to tilt the same when the receptacle is tilted, said receptacle being provided with a weight returning finger on said receptacle whereby the parts are returned to set position upon the tilting of the receptacle to discharge the bucket.

5. In a sruct-ure of the class described, the combination of a valve, a receptacle mounted for tilting movement, an overflow bucket within said receptacle, a pivotally mounted yoke-like lever provided with an arm, an adjustable link connecting said arm on said lever to said valve, the pivot connection for the link to said arm being out of alinement with the pivot-s for said lever, suspending links for said bucket pivotally mounted on said lever, the pivots for said lever constituting stops with which the suspending links engage when the parts are in set position, a

weight pivotally mounted on the pivots for said lever to strike said arm when the parts are actuated, and a bucket dumping member on said receptacle adapted to engage the bucket to tilt the same when the receptacle s tilted, said receptacle being provided with a weight returning member whereby the parts are returned to set position upon the tilting of the receptacle to discharge the bucket.

6. In a structure of the class described, the combination of a valve, an overflow bucket, a pivotally mounted yoke-like lever provided with an arm, an adjustable link connecting said arm on said lever to said valve, the pivot connection for the link to said arm being out of alinement with the pivots for said lever, and suspending links for said bucket pivotally mounted on said lever, the pivots for said lever constituting stops with which the suspending links engage when the parts are in set position.

7. In a structure of the class described, the combination of a housing open at the bottom, a receptacle pivotally mounted within and constituting a bottom for the housing, a feed valve, an overflow bucket within said housing, a pivotally mounted lever provided with an arm, a link connecting said arm to said valve, the pivot connection for the link to said arm being out of alinement with the pivot for said lever, a suspending link for said bucket pivotally mounted on said lever, there being a stop engaging said suspending link when the parts are in set position, a pivoted weight engaging said arm on said yoke when the parts are in set position and adapted to strike said lever when actuated, a bucket dumping member on said receptacle engaging the bucket to tilt the same when the receptacle is tilted, said receptacle being provided with a weight engaging member whereby the parts are returned to set position upon the tilting of the receptacle to dis charge the bucket, and an adjustable stop means for said valve.

8. In a structure of the class described, the combination of a feed valve, an overflow bucket, a pivotally mounted lever provided with an arm, an adjustable link connecting said arm to said valve, the pivot connection for the link to said arm being out of aline ment with the pivot for said lever, a suspending link for said bucket pivotally mounted on said lever, there being a stop engaging said suspending link when the parts are in set position, and a pivoted weight adapted to strike said lever when the parts are actuated.

9. In a structure of the class described, the combination of a feed valve, an overflow bucket, a pivotally mounted lever provided with an arm, an adjustable link connecting said arm to said valve, the pivot connection for the link to. said arm being out of aline- H ll ment with the pivot for said lever, and a suspending link for said bucket pivotally mounted on said lever, there being a stop engaging said suspending link When the parts are in set position.

10. In a structure of the class described, the combination of a feed valve, an overflow bucket, a pivotally mounted lever provided with an arm, a link connecting said arm to said valve, the pivot connection for the link to said arm being out of alinement with the pivot for said lever, and a suspending link for said bucket pivotally mounted on said lever, there being a stop engaging said suspending link when the parts are in set position.

11. In a structure of the class described, the combination of a valve, an overflow bucket, an actuating lever from which said bucket is suspended, a toggle connection for said bucket to said valve stem, a pivotally mounted counterweight adapted to engage said lever when the parts are in set position, a pivoted valve and adjusting member coacting with said valve seem, a pair of adjusting screws for said valve adjusting member, one oi which is provided with a hand wheel having gaging indicia thereon, and a coacting adjustablv mounted stop viding an index member for such indicia.

12. In a structure of the class described, the combination of a valve, an overflow bucket, an actuating lever "from which said bucket is suspended, a toggle connection for said bucket to said valve stem, and a pivotally mounted counterweight adapted to engage said lever when the parts are in set position.

13. In a structure o1 the class described, the combination of a housing open at the bottom, a receptacle pivotally mounted within and constituting a bottom for said housing, a valve casing mounted on said housing, a feed valve, a pivotally mounted actuating lever, an overflow bucket suepend ed therefrom within said receptacle, an operating connection -for said actuating lever to said valve, pivotally mounted weight acting on said lever when the parts are actuated, and a bucl-zet dumping member on said receptacle engag ng the bucket to tilt the same when the receptacle is tilted, said receptacle being provided with a weight ongaging part whereby the parts are returnet to set position upon the tilting of the receptacle and the bucket discharged.

14. In a structure of the class described, the combination. of a feed valve, an ove flow bucket, an actuating lever upon winch said bucket is mounted, a counterweight operatively associated with said actuating member, an adjustable link eccentrically connected to said actuating lever and pivotally connected to said valve, and a manually adjusted stop means for limiting the opening of the feed valve.

In a structure of the class described, the comb nation of a feed valve, an overflow bucket, an actuating lever upon which said bucket is mounted, counterweight operatively associated with said actuating r ember, and a link eccentrically connected to said actuating lever and pivotally connected to said alvc.

16. In a structure of the class described, the combination of a feed valve, a pivotally mounted actuating lever, an overflow bucket suspended therefrom within said receptacle, a toggle connection for said actuating lever to said valve, and a pivotally mounted counterweight acting on said lever when tne parts are in set position.

In witness whereof have hereunto set our hands.

EDV ARD A. FIELD. EDWARD A. FIEL Jr. 

